After adding a product to the cart I receive an error
the following error message "Warning: Cannot modify header information - headers already sent by (output started at /home/greenpe/public_html/Tienda/tienda.php:541) in /home/greenpe/public_html/Tienda/tienda.php
It looks like a PHP error warning... The product is correctly added to the cart but there is no redirection to the cart page...
Any suggestion ?